Remote dispensing head with a concealed expansion chamber for heated fluid dispensing systems

ABSTRACT

A remote dispensing head for use in a Fluid Heating and Dispensing System operating generally at atmospheric pressure includes, a control valve section, an expansion chamber section including an expansion chamber concealed adjacent the point of attachment for said remote dispensing head, and a removably connectible dispensing spout for discharging fluid from the system. In the lower section of the remote dispensing head a connecting passage with an aspirator therein connects the expansion chamber to the conduit for delivering incoming fluid to the fluid heating and storage tank for the system to permit collected fluid to be aspirated from the expansion chamber with incoming fluid delivered to the heating and storage tank. A shutoff float actuated by the level of collected fluid in the expansion chamber terminates aspiration when the collected fluid has been withdrawn from the expansion chamber and thus prevents aspiration of cold air with the incoming fluid being delivered to the heating and storage tank. In the upper section of the remote dispensing head a combined discharge and vent for the system connects the expansion chamber with the dispensing spout to permit discharge of expansion or overflow water in excess of the capacity of the expansion chamber. A manual actuator for operating the control valve is shaped to permit the discharge spout to be angularly positioned at the point of attachment through an arcuate range of at least 270*.

United States Patent 1191 Dreibelbis et al.

14 1 Sept. 16, 1975 REMOTE DISPENSING HEAD WITH A CONCEALED EXPANSIONCHAMBER FOR HEATED FLUID DISPENSING SYSTEMS [75] Inventors: Richard C.Dreibelbis, Fair Lawn;

Arthur C. Homeyer, Essex Fells; Warren E. Turner, Succasunna, all of NJ.

[73] Assignee: Emerson Electric Co., St. Louis, Mo.

[22] Filed: June 19, 1974 1211 Appl. No.: 480,675

Primary ExaminerRobert B. Reeves Assistanl ExaminerCharles A. MarmorAttorney, Agent, or FirmDaniel H. Bobis [57] ABSTRACT A remotedispensing head for use in a Fluid Heating and Dispensing Systemoperating generally at atmospheric pressure includes, a control valvesection, an expansion chamber section including an expansion chamberconcealed adjacent the point of attachment for said remote dispensinghead, and a removably connectible dispensing spout for discharging fluidfrom the system. In the lower section of the remote dispensing head aconnecting passage with an aspirator therein connects the expansionchamber to the conduit for delivering incoming fluid to the fluidheating and storage tank for the system to permit collected fluid to beaspirated from the expansion chamber with incoming fluid delivered tothe heating and storage tank. A shut-off float actuated by the level ofcollected fluid in the expansion chamber terminates aspi' ration whenthe collected fluid has been withdrawn from the expansion chamber andthus prevents aspiration of cold air with the incoming fluid beingdelivered to the heating and storage tank. In the upper section of theremote dispensing head a combined discharge and vent for the systemconnects the expansion chamher with the dispensing spout to permitdischarge of expansion or overflow water in excess of the capacity ofthe expansion chamber. A manual actuator for operating the control valveis shaped to permit the discharge spout to be angularly positioned atthe point of attachment through an arcuate range of at least 270.

8 Claims, 8 Drawing Figures REMOTE DISPENSING HEAD WITH A CONCEALEDEXPANSION CHAMBER FOR HEATED FLUID DISPENSING SYSTEMS BACKGROUND OF THEINVENTION The invention relates generally to systems for dis" pensing'heated fluid operating at atmospheric pressure and more particularly toa dispensing means having a concealed expansion chamber disposed remotefrom the heating and storage tank for the fluid tobe dispensed from thesystem.

There are systems for dispensing heated fluid at atmospheric pressurewherein the dispensing means is remote from the storage and heating tankfor the fluid to be dispensed from the system as is shown in U.S. Pat.Nos. 3,202,321., 3,381,110 and in applicants copending application U.S.Ser. No. 352,972 filed Apr. 20, 1973 now U.S. Pat. No. 3,836,050 aremote dispensing head with an expansion chamber having a level operatedfloat cut off is disclosed.

Dispensing heads remote from the storage and heating tank for a heatedfluid dispensing system which in elude an expansion chamber andmechanical means, such as valve means for controlling the flow of inletwater to the heating and storage tank, are large and complex fixtures.Systems with such remote dispensing heads also require extra piping toprovide the desired fluid flow paths from the inlet source, to theremote dispensing head, thence to the heating and storage tank andfinally back to the remote dispensing head where the fluid is dispensedthrough the dispensing spout mounted therein.

Since such remote dispensing heads are relatively large and complexfixtures, and are the only visible portion of the system, it isdesirable to give them pleasant appearance or finish customary to theexisting finishes utilized on other water dispensing fixtures such asfaucets and the like devices.

Further, in remote dispensing heads which include an expansion chamberas is shown in U.S. Pat. No. 3,202,321, additional problems havedeveloped because of the aspiration of air into the system through theexpansion chamber. In applicants abovementioned co-pending application,Ser. No. 352,972 filed Apr. 20, 1973 now U.S. Pat. No. 3,836,050 theseproblems are discussed and one means is shown and claimed for overcomingthe turbulence and other adverse ecological factors which suchaspirationproduces in the dispensing of heated fluid from such heatingand dispensing systems.

In the present invention, another form of improved remote dispensinghead is disclosed which overcomes these same problems of the prior art,in which the expansion chamber in the remote dispensing head isconcealed below the point where the remote dispensing head is attachedso that only a small portion or part of the remote dispensing head willbe visible, namely, the spout and the actuating means for operatingthevalve means which controls flow of the incoming fluid delivered to thesystem.

The actuating means may be operatively associated with the remotedispensing head or may be spaced therefrom depending on whether meansfor controlling the flow of'incoming fluid is mechanically orelectrically operated.

In the expansion chamber section, a float means in the expansion chamberacts to close the end of a passage means at the-lowermost section of theremote dispensinghead in communication with the expansion chamberaftervthe dispensing system has aspirated collected expansion fluid fromthe expansion chamber. This prevents aspiration of air into-the fluidbeing delivered to the associated heating and dispensing systems inwhich the remote dispensing head is used.

Aspiration of cold air into the fluid flow path in the heating anddispensing system has caused thermal pollution in the prior art devices.In the present device this is prevented by the shut-off action of thefloat means as soon as collected expansion fluid has been drained fromthe expansion chamber.

Additionally, the closing off of the aspirating passage in operativeassociation with the system is desirable to prevent induction of airinto the heating and storage tank because this will prevent formation ofan objectionable air pocket at the top of the heating and storage tankthat would cause delay in starting flow from the dispensing spout in theremote dispensing head when the system is actuated for operation.

SUMMARY oF THE INVENTION valve means in said passage means to controlthe flow of said incoming fluid to the'system, aconnecting passage insaid expansionchamber section having aspirating means and connected tocommunicate between the lowermost portion of the expansion chamber andthe passage means for delivering incoming fluid to'the system so thatexpansion or overflow fluid will pass'to said expansion chamber whenthe's ystem is not operated and will be aspirated therefrom when theincoming fluid is passed to the system, a discharge spout in the remotedispensing head for discharging heated fluid from the system, a combinedoverflow and vent means at the uppermost portion of the expansionchamber section connected to the discharge spout, and means operablebythe level of collected fluid in the expansion chamber to shut off theconnecting passage when collected fluid is substantially drained fromsaid expansion chamber. 1 I I l Additionally, the remote dispensingheadabove described including, a dispensing spout detaehably connectible tothe dispensing head and angularly adjustable relative thereto, means foroperating the valve means; said valve operating means mounted on thedispensing head and disposed to permit angular adjustment of thedispensing spout in at least a, range of 270.

Other objects of the invention not particularly delin eated will becomeclearto those skilled in the art from the accompanying description -madein conjunction with the annexed drawings in which, 1

FIG. 1 is a side elevational view of a dispensing system forheated fluid'with a remote dispensing head in accordance with the presentinventionmounted. in a sink cabinet showing a 'fragment of theheatingand storage tank for the systems l FIG. 2 is a 'front elevationalviewof the remote dispensing head shown in FIG. 1 showing the dispensingspout, the control valve section, connecting means and the expansionchamber section. I

FIG. 3is atop plan view ofthe remotedispensing head shownin FIG. 2. Y ai FIG. 4 is a verticalsection taken on line 44 of FIG.

FIG. 5 is avertical section taken on line 5-5 of FIG.

. FIG. 6 is a cross-section taken on line 6-6 of FIG.

FIG. 7 is a cross-section taken on line 7 -7 of FIG.

FIG. .8 is .a cross+section taken on line 88 of FIG.

The elongated threadedproject ion 12 on the control valve section. has astop nut 15 to adjust the length of the elongated threaded section thatwill extend abgyethe surface of the counter C and a washer 16 and locknut '17 will holdthe remote dispensing head 10 in its..,adj ustedposition A cover 18 provided to cover the end of the threaded section ofthe remote dis pensinghead 10 extending above the surface of the counterC c over 18 will have a conventional finish such asstainlesss'teehchrome or the like applicable to fixtures w ey... H

Remote dispensinghead 10 is associated with a hot water heating anddispensing system which includes a jacketed water storage and heatingunit generally designated ZO Conduit'fmeansas hereinafter describedconneets these'elementsto each other and to a source of pressuriied'water from the water mains (not shown) of the eoventional water supplysystems available.

I The jacketed storage and heating unit 20 is supportably mounted onbrackets 21a and 21b 'within the sink enclosure in spacedfrelation toand therefore remote from the associated dispensing heat 10 for the hotwater heating and dispensing system.

In the jacketed storage and heater assembly 20 is a storage andheatingtank 22 having a heating element 24 which'is automaticallyoperated to maintain water I justing'the switch setting to maintain apredetermined water temperature within the heating and sto'ragetank 22;The electricalconnections to the heating element 24 and thermostatassembly 23 are shown in FIG. 1 of the drawings and the entire means forheating the sys- Referring to .thedrawings, FIG. 1 shows anenclosure 41tern will not more fully describedbecause the same is wellknown in theas indicated by US. Pat. Nos. 3,202,321 and 2,903,551.

FIGS. 1 and 2 show that an inlet conduit 30 communicates at one end witha source of water to be heated and dispensed and at the other endcommunicates with and is connected to the inlet means 31 in the controlvalve section 1.1 of the dispensing head 10.

Control valve section 1 1 includes valve means generally designated 32having a valve head 33 which normally maintains the inlet means 31closed by means of a valve spring 34. The valve head is connectedthrough a valve stem 35 which extends through a sealed opening 36 .inthe endof the threaded projection 12 on the control valve section 11 andan opening 37 in the finished cover piece 18 to an elongated manuallyoperated actuating lever 38 operatively connected to a cam assembly 39on'the end of the valve stem 35 and pivoted as at 39a against theouterface of the finished cover piece 18. When the'lever 38 is depressedmanually, it will raise the normally closed valve head 33 to open theinlet means 31 so that water from the source can flow freely into avalve chamber 40 and thus will also cause the valve spring 34 to becompressed. On release of the actuating lever 38 from the depressedposition, the compressed spring 34 will expand to return the valve head33 to the normally closed position on the inlet means 31. This will cutoff the flow of fluid from the source to valve chamber 40.

Valve chamber 40 communicates by cross passage 41 in the control valvesection with one end of a longitudinal passage 42 in the expansionchamber section of the remote dispensing head 10. The longitudinalpassage 42 at the end remote from the cross passage 41 is connected toinlet conduit 43 which is connected to the bottom of the storage andheating tank 22.

The storage and heating tank 22 has a discharge conduit 44 connected tothe uppermost portion thereof and the discharge conduit 44 in turn isconnected at the end remote from the storage and heating tank 22 to adischargepassage 45in the control valve section 11 of the remotedispensingheacl 1 0. Discharge passage 45 communicates with alongitudinally extending bore 46 in the threaded projection 12. Bore 46has a tapered opening 47 in the end of the threaded-projection 12extending above the counter C, into which a discharge spout'50 having adispensing passage 51 therethrough is mounted by means of a taperedportion 52 which mates or fits the tapered opening 47. An alignedopening 53 in the finished cover piece 18 pennits assembly i of thedischarge spout into the tapered opening 47.

The elongated manual actuating lever 38 is shown as so mounted that theend adjacent the discharge spout is contoured asat 54a to fit about thedischarge spout .It will be understood that the actuating means for thevalve means 32 may be an electrically operated solenoid means (notshown) without departing from the scope of the present invention.

OPERATION When the actuating lever 38 is depressed the fluid to beheated will pass from the source thereof through inlet 31, valve chamber40, cross-passage 41, longitudinal passage 42 and inlet conduit 43 tothe bottom of the storage and heating tank, 22. Due to the difi'erencein pressure in the conventional water system which is higher than theatmospheric pressure at which the pres ent disclosed heating anddispensing system operates the incoming fluid passing to the bottom ofthe storage and heating tank 22 will displace heated fluid from theupper portion or top of the storage and heating tank 22 through thedischarge conduit 44 connected to the upper portion or top thereof. Thedischarge conduit 44 will pass the heated fluid to the discharge passage45 for discharge from the system through the dispensing passageway 51 inthe discharge or dispensing spout 50.

Heating fluid will continue to be displaced and to be discharged as longas the actuating lever '38 is held in the depressed position, theheating element 23 being sized to handle the continuous volumetric flowof the system under such conditions of operation.

When the actuating lever 38 is released and the valve head 33 connectedthereto moves to its normally closed position, as above described,displacement and discharge of the heated fluid will terminate.

The present disclosure differs from that shown in U.S. Pat. No.3,202,321 and in said U.S. Pat. No. 3,836,050 in that it provides animproved remote dispensing head having only a relatively small portion,namely the outer end of the threaded projection 12, disclosed above thecounter C. This materially reduces the portionof the dispensing headwhich must have an acceptable and attractive appearance and since thequantity of stainless steel or chromium plating used for this purpose isreduced from that utilized in prior art devices for the same purposethere is a substantial reduction in the cost of manufacturing a remotedispensing head in accordance with the present invention.

Further, however,'the remote dispensing head in accordance with thepresent invention simplifies the associated heating and dispensingsystem because it permits the expansion chamber to act as the vent meansfor the entire system and the improved shut-off means associated withthe expansion chamber for the system prevents aspiration of air whichproduces the undersirable conditions of operation first described aboveconcerning the aspiration of cold air into the systern.

EXPANSION CHAMBER SECTION OF REMOTE DISPENSING HEAD Thus, referring toFIGS. 4 to 8 the expansion chamber section 13 in remote dispensing head10 is shown disposed on the side of the control valve section remotefrom the threaded projection 12 and accordingly when the dispensing head10 is in assembled position, the exparision chamber section 13 will beconcealed below the surface of the counter C.

The expansion section 13 includes an expansion chamber 55 which will besized volumetrically as the system requires to receive either expansionwater from the storage and heating tank or overflow water at times whenthe discharging of fluid is terminated under conditions whichproducesuch overflow.

Expansion chamber section 13 further includes a connecting passage 56 atthe lower end thereof which connects at one end with the expansionchamber 55 by means of a port 57. At the end'remote therefrom theconnecting passage 56 communicates with the longitudinal passage 42 fordelivering incoming fluid to the inlet conduit 43 connected to thebottom of the storage and heating tank 22. 0

At the point where the'connecting passage 56 meets the longitudinalpassage 42 an aspirating means 58 is provided which has a small orrestricted opening as at 59. Therefore flow to and from the expansionchamber 55 will pass through the aspirating means 58, orifice 59 andconnecting passage 56. When inlet port 31 is closed and no water isbeing dispensed by the system expansion or overflow water from thestorage and heating tank 22 will pass up:inlet conduit 43 throughaspirating means 58, orifice.59, connecting passage 56 and port 57 intothe expansion chamber 55 where it will collect. Overflow water willcollect where reverse displacement is caused by. the water in dischargeline 44 returning to the storage and heating tank 22 by gravity flow. a

At the upper end of the'expansion chamber 55, a combined overflow andvent passage 60 provides means for connecting a combined overflow andvent line 61 formed and lying .within the discharge passage 51 of thedischarge spout 50. Since the entire system communicates with theexpansion chamber 55 either through inlet conduit 43 or with thedischarge passage 51 throughdischarge conduit 44 the system will be incommunication with this venting means and therefore will only beoperating againstatmospheric pressure.

At the point where'the port 57 opens into the expansion chamber 55 thebottom wall 6510f the expansion chamber 55 is sloped so that collectedfluid will drain freely and completely from the expansion chamber 55.

Such collected fluid will be aspirated from the expansion chamber 55bythe aspirating means 58 when incoming water flows through longitudinalpassage 42, aspirating means 58 and inlet conduit 43 to the bottom ofthe storage and heating tank 22. I

However, because of the undesirableeffect of aspirating air into thesystemas above described, means are providedto shut-off or close theport 57 when the collected fluidhas'drained'from the expansion chamberThus, FIGS. 4 and 8 show that the port 57 is provided with a seat 66 sothat a freely disposed float member 67 can seat therein when thecollected fluid has beenv aspirated from the expansion chamber 55.

The float member maybe a ball shaped element as shown which may behollow or solid and will be made of any suitableinert material whichhas'a specific grav ity less than that of water or other fluid thatmaybe collected in the expansion chamber 55. When fluid expands or iscollected in the expansion chamber 55 the float member 67 will'floatatthe surface of the fluid as shown in phantomized lines and when thecollected fluid is aspirated from the expansion chamber 55 the floatmember 67 will engage the port seat 66 to close the port 57-and thuspreventaspiration of air into the system with the flow of incomingwater.

The construction thus described shows a simpler form of system than thatheretofore known in that only two connecting conduits namely the inletconduit 43 and discharge conduit 44 are required to bring the storageand heating tank 22 and "the dispensing head 10 into operativeconnection with each other. Further, however, when "the system is notinoperation these two conduits and the storage and heating tank act likea U- tube so that asubstan'tial volume is provided for expansion oroverflow water or. other fluid before any excessive collection of suchwater or other fluid will be discharged through thevent line 6] in thedischarge passage 51 in the discharge spout 50. i 1

It will be understood that the. invention is not to be limited to thespecific construction or arrangement of parts shown'but-that they may bewidely modified withinthe invention defined by the claims.

What is claimed is:

l. A dispensing head for an associated dispensing system for heatedfluid disposed at a point of attachment remote from the associateddispensing system including, 1 I Y z I a. means forming a control valvesection and an ex- .5 :pansion chamber section disposed therein foroperative association, v

b. connecting means for attaching the dispensing head so that only asmall part of the upper portion of the control valvesection is visible.above the point -of' attachment and the remaining part of theand :adischarge spout operatively associated withv the-discharge passage fordischarging heated fluid delivered to the dispensing head, *dapassagemeans in-said expansion chamber section connected at one-end to theoutlet in said control "rdelivering incoming fluid to be heated to theassociated dispensing system when the. valve. means is 'actuated to openthe inlet,

. said expansion chamber section forming an expansion chamber havingapredetermined volume for collectingfluid therein and a connectingpassage with aspirating means therein connected between the :lowermostvpart of the expansion chamber and atthe end'remote. therefrom with thepassage :means for delivering incoming fluid whereby aspiration ofcollected fluid from the expansion chamber will occur when incomingfluidto be heated is l I delivered to the associated dispensing system,

f. a combined overflow and vent means at the upper .endof said expansionchamber section connected atone end to the expansion chamber and at theend remote therefrom to the discharge spout, and

g.-means operated by -the levelof the collected fluid in the expansionchamber toclose-the connecting 1 passage when substantially all of thecollected fluid is aspirated from the expansion chamber. 2. In a remotedispensing head as claimed in claim 1 wherein. p

a. said discharge passage has one end opening thereof locatedintheconnecting means at the upper portionaof the control valve sectionvisible above the point of attachment,

i "b, the'said one end opening of the discharge passage 'is tapered,andvI ca the discharge spout having oneend tapered to permit-the dischargespout to be detachably connected in said tapered end opening of thedischarge pas- .sageand to be angularly positioned therein relative thepoint. of, attachment at least in a range of 270.

valve section and atthe opposite end disposed for.

. 3, In a remotcdispensing head claimed in claim 2 wherein, r i

a. said valve means includes means for manually operating the valvemeans,

b. said manual operating means is pivotably connected to the visibleportion of the control valve section above the point of attachment, andmeans connecting the manual operating means to the valve means,

c. said manual operating means contoured at one end to fit about thedischarge spout to permit angular positioning of the discharge spout.

4. In a remote dispensing head as claimed in claim 2 including,

A. a combined overflow and vent line formed in the discharge spout, and

b. said combined overflow and vent means for the system connected to thecombined overflow and vent line in the discharge spout. I

5. in a system for dispensing heating fluid at a point of .use remotetherefrom,

a. a storage and heating tank in said system for fluid to be heated,

b. a dispensing head having, a control valve section,

and an expansion chamber section, I

c. said dispensing head havinga, connecting means thereon for attachingthe dispensing head adjacent said remote point of use,

(1. said connecting means for attaching the dispensing head so disposedthereonthat only a small part of the upper portion ofthe control valvesection is visible above the point of attachmentand the remaining part.of the dispensing head including, the expansion chamber section isconcealed below the point of attachment,

. said control valve section having, an inlet connected to the fluid tobe heated, an outlet for said fluid, valve means normally maintainingthe inlet closed for controlling flow of I incoming fluid through thedispensing head, a discharged passage for heated fluid, and a dischargespout operatively associated with the discharge passage for dischargingheated fluid delivered to the dispensing head,

f. passage means in said expansion chamber section connected at one endto the outlet in said control valve section,

. a first conduit connected at one end to the end of the passage meansremote from the end connected to the outlet in said control valvesectionand said first conduit connected at the other end to the bot- Itom of the storage and heating tank for delivering incoming fluidthereto when the valve means is actuated to open the inlet in thecontrol valve section,

b. a second conduit connected at one end to the upper end ofthe storageand heating tank and to the discharge passage in the dispensing head fordelivering heated fluid to the dispensing head which is displaced by theincoming fluid to be heated,

i. said expansion chamber section forming an expansion chamber having apredetermined volume for collecting fluid therein, and a connectingpassage with aspirating means therein connected between the lowermostpart of the expansion chamber and at the end remote therefrom with thepassage means for delivering incoming fluid whereby aspiration ofcollected fluid from the expansion chamher will occur when incomingfluid is delivered to the heating and storage tank for the system,

a combined overflow and vent means at the upper end of said expansionchamber section connected at one end to the expansion chamber and at theend remote therefrom to the discharge spout, and

k. means operated by the level of the collected fluid in the expansionchamber to close the connecting passage when substantially all of thecollected fluid is aspirated from the expansion chamber.

6. The combination as claimed in claim wherein,

a. said discharge passage has one end opening thereof located in theconnecting means at the upper portion of the control valve sectionvisible above the point of attachment,

b. the said one end opening of the discharge passage is tapered, and

c. the discharge spout having one end tapered to permit the dischargespout to be detachably connected in said tapered end opening of thedischarge passage and to be angularly positioned therein relative thepoint of attachment at least in a range of 270.

7. The combination as claimed in claim 6 wherein,

a. said valve means includes means for manually operating the valvemeans,

b. said manual operating means pivotably connected to the visible pointof the control valve section above the point of attachment, and meansconnect ing the manual operating means to the valve means,

c. said manual operating means contoured at one end to fit about thedischarge spout to permit angular positioning of the discharge spout.

8. The combination as claimed in claim 6 wherein,

a. a combined overflow and vent line formed in the discharge spout, and

b. said combined overflow and vent means for the system connected to thecombined overflow and vent line in the discharge spout.

1. A dispensing head for an associated dispensing system for heatedfluid disposed at a point of attachment remote from the associateddispensing system including, a. means forming a control valve sectionand an expansion chamber section disposed therein for operativeassociation, b. connecting means for attaching the dispensing head sothat only a small part of the upper portion of the control valve sectionis visible above the point of attachment and the remaining part of thedispensing head including the expansion chamber section is concealedbelow the point of attachment, c. said control valve section having, aninlet connected to the fluid to be heated in said associated dispensingsystem, an outlet for said fluid, valve means normally maintaining theinlet closed for controlling flow of incoming fluid through thedispensing head, a discharge passage for heated fluid, and a dischargespout operatively associated with the discharge passage for dischargingheated fluid delivered to the dispensing head, d. passage means in saidexpansion chamber section connected at one end to the outlet in saidcontrol valve section and at the opposite end disposed for deliveringincoming fluid to be heated to the associated dispensing system when thevalve means is actuated to open the inlet, e. said expansion chambersection forming an expansion chamber having a predetermined volume forcollecting fluid therein and a connecting passage with aspirating meanstherein connected between the lowermost part of the expansion chamberand at the end remote therefrom with the passage means for deliveringincoming fluid whereby aspiration of collected fluid from the expansionchamber will occur When incoming fluid to be heated is delivered to theassociated dispensing system, f. a combined overflow and vent means atthe upper end of said expansion chamber section connected at one end tothe expansion chamber and at the end remote therefrom to the dischargespout, and g. means operated by the level of the collected fluid in theexpansion chamber to close the connecting passage when substantially allof the collected fluid is aspirated from the expansion chamber.
 2. In aremote dispensing head as claimed in claim 1 wherein, a. said dischargepassage has one end opening thereof located in the connecting means atthe upper portion of the control valve section visible above the pointof attachment, b. the said one end opening of the discharge passage istapered, and c. the discharge spout having one end tapered to permit thedischarge spout to be detachably connected in said tapered end openingof the discharge passage and to be angularly positioned therein relativethe point of attachment at least in a range of 270*.
 3. In a remotedispensing head as claimed in claim 2 wherein, a. said valve meansincludes means for manually operating the valve means, b. said manualoperating means is pivotably connected to the visible portion of thecontrol valve section above the point of attachment, and meansconnecting the manual operating means to the valve means, c. said manualoperating means contoured at one end to fit about the discharge spout topermit angular positioning of the discharge spout.
 4. In a remotedispensing head as claimed in claim 2 including, A. a combined overflowand vent line formed in the discharge spout, and b. said combinedoverflow and vent means for the system connected to the combinedoverflow and vent line in the discharge spout.
 5. In a system fordispensing heating fluid at a point of use remote therefrom, a. astorage and heating tank in said system for fluid to be heated, b. adispensing head having, a control valve section, and an expansionchamber section, c. said dispensing head having a connecting meansthereon for attaching the dispensing head adjacent said remote point ofuse, d. said connecting means for attaching the dispensing head sodisposed thereon that only a small part of the upper portion of thecontrol valve section is visible above the point of attachment and theremaining part of the dispensing head including, the expansion chambersection is concealed below the point of attachment, e. said controlvalve section having, an inlet connected to the fluid to be heated, anoutlet for said fluid, valve means normally maintaining the inlet closedfor controlling flow of incoming fluid through the dispensing head, adischarged passage for heated fluid, and a discharge spout operativelyassociated with the discharge passage for discharging heated fluiddelivered to the dispensing head, f. passage means in said expansionchamber section connected at one end to the outlet in said control valvesection, g. a first conduit connected at one end to the end of thepassage means remote from the end connected to the outlet in saidcontrol valve section and said first conduit connected at the other endto the bottom of the storage and heating tank for delivering incomingfluid thereto when the valve means is actuated to open the inlet in thecontrol valve section, h. a second conduit connected at one end to theupper end of the storage and heating tank and to the discharge passagein the dispensing head for delivering heated fluid to the dispensinghead which is displaced by the incoming fluid to be heated, i. saidexpansion chamber section forming an expansion chamber having apredetermined volume for collecting fluid therein, and a connectingpassage with aspirating means therein connected between the lowermostpart of the expansion chamber and at the end remote therefrom with thepassage means for delivering incoming fluid wHereby aspiration ofcollected fluid from the expansion chamber will occur when incomingfluid is delivered to the heating and storage tank for the system, j. acombined overflow and vent means at the upper end of said expansionchamber section connected at one end to the expansion chamber and at theend remote therefrom to the discharge spout, and k. means operated bythe level of the collected fluid in the expansion chamber to close theconnecting passage when substantially all of the collected fluid isaspirated from the expansion chamber.
 6. The combination as claimed inclaim 5 wherein, a. said discharge passage has one end opening thereoflocated in the connecting means at the upper portion of the controlvalve section visible above the point of attachment, b. the said one endopening of the discharge passage is tapered, and c. the discharge spouthaving one end tapered to permit the discharge spout to be detachablyconnected in said tapered end opening of the discharge passage and to beangularly positioned therein relative the point of attachment at leastin a range of 270*.
 7. The combination as claimed in claim 6 wherein, a.said valve means includes means for manually operating the valve means,b. said manual operating means pivotably connected to the visible pointof the control valve section above the point of attachment, and meansconnecting the manual operating means to the valve means, c. said manualoperating means contoured at one end to fit about the discharge spout topermit angular positioning of the discharge spout.
 8. The combination asclaimed in claim 6 wherein, a. a combined overflow and vent line formedin the discharge spout, and b. said combined overflow and vent means forthe system connected to the combined overflow and vent line in thedischarge spout.